Organ-pipe.



PATENTBD JUNE 25 1907.

F. I. WHITE.

ORGAN PIPE.

APPLICATION FILED MAR. 30, 1907;

wikmwm FREDERICK I. l/VHITE, OF READING, MASSACHUSETTS.

ORGAN-PEPE,

Specification of Letters Patent.

Patented June 25, 1907.

Application filed March 30, 1907. erial No. 365,608.

To all whom, it may concern.-

Be it known that I, FREDERICK I. W'nrrn, of Reading, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Organ- Pipes, of which the following is a specification.

This invention relates to organ pipes which are made of sheet metal and circular in cross section, and is particularly applicable to reed pipes of tapering or substantially conical form, although it may be applied to cylindrical pipes of uniform diameter known as flue pipes. The lower end of a reed pipe is inserted in a block, and communicates with a reed-holding device, known as an eschallot, the said inner end being also the small end. In the outer or larger end portion of the pipe, is a longitudinal opening. The effective length and pitch of the pipe depends upon the distance between the inner end of said opening and the inner end of the pipe, so that by raising or lowering the inner end of the opening the pitch of the pipe may be varied. It is a common practice to form the opening in the pipe by forming three cuts which form' three sides of an elongated slot, the material bounded by the cuts being left integral with the pipe in the form of a tongue, the upper end of which is rolled outwardly so that the lower end of the opening is formed by the rolled portion of the tongue. The opening may be length ened by additionally rolling the strip, and shortened by partially unrolling it. This practice is open to the objection that the tongue often becomes loosened, and vibrates in the opening, causing an inappropriate and unpleasant sound. Moreover the tongue is liable to be broken by the operation of rolling and unrolling it.

My invention has for its object to provide simple and effective means for raising and lowering the lower end of the said opening to vary the effective length and pitch of the pipe,

which shall be free from the above -mentioned objections.

The invention consists in the improve ments which I will now proceed to describe and claim.

Of the accompanying drawings, forming a part of this specifioation,Figure 1 represents a side elevation of an organ pipe constructed in accordance with my invention, the adjusting collar hereinafter referred to being removed. Fig. 2 represents a view similar to Fig. 1, showing the adjusting collar in place on the pipe. Fig. 3 represents a section on line 33 of Fig, 2. Fig. at represents a side view of the adjusting collar removed from the )i )0. Fi 5 re )resents a side view of a somewhat different embodiment of my 111- vention.

The same letters of reference indicate the same p arts in all the figures.

Referring to Figs. 1, 2, 3, and 4, 12 represents the outer end portion of a sheet metal organ pipe, in which a longitudinal opening 13 is formed. The pipe is preferably composed of three parts or members, 12, 14 and 16, the inner end of the outer member 12 being inserted and held frictionally in the outer end of the inner member 14, the latter forming a peripheral shoulder 15 surrounding the pipe just below or substantially flush with the lower end of the opening 13. The third member 16 is preferably a sheet metal collar formed to have a frictional lit upon the periphery of the member 12, its lower end bearing on the shoulder 15. The collar has a spiral or cam-shaped upper end or edge 17, which overlaps the lower end of the opening 13, and forms in effect an adjustable lower end which can be raised or lowered by turning the collar in one direction or the other on the pipe, as indicated by full and dotted lines in Fig. 2. The collar has a close frictional ilit on the portion of the pipe which it surrounds, and is preferably open at one side, and put under such tension that it tends to spring inwardly, and hug the periphery of the pipe. The collar is, therefore, adapted to be held by friction in any position to which it may be turned.

It will be seen from the foregoing that provision is made for quickly and accurately adjusting the effective length and pitch of the pipe by raising and lowering the lower end of theopening without employing such means as will produce objectionable sounds or will be liable to breakage by use.

In Fig. 5 I show a modified construction in which the spiral edge 17 is formed on an extension of the pipe member 14:; instead of being formed on a collar or third member which is a separate piece. In this case the adjust ment of the opening 13 will be effected by turning the pipe member 12 in the member 14. Said members 12 and 1e are, in each of the constructions shown, connected by friction, so that either member may be rotatably adjusted independently of the other.

In Fig. 1 I show the member 14 provided with an o'l'lset portion 18 near its lower end, said portion being inclined upwardly from the part above it, and furnishing a pocket for the accumulation of dust and other foreign matter that may fall through the upper end of the pipe, the said foreign matter being thus prevented from dropping into the eschallot which communicates with the lower end of the pipe.

It will be observed. that there is no liability of upward displacement of the collar 16, said collar and the pipe being of tapering form, the taper of the pipe preventing upward displacement of the collar, while the shoulder 151prevents downward displacement of the col ar.

It will be seen that my improvement does not involve any material increase in the diameter of the pipe, nor in the space required to contain it, there being no part projecting outwardly from the periphery of the pipe, such as is caused by the rolled portion of the tongue hereinbefore referred to, hence the pipes can be located as close together as may be desired, and in fact contiguous pipes may be placed in contact with each other, no i11- termediate space being required.

The members 12 and 14 may be fastened together by any suitable means to prevent the member 12 from turning, after said. member 12 has been adjusted to cause the slot 13 to face in the desired direction. The member 14 is usually affixed to the eschallot-holding block so that it cannot turn. hen the members are first assembled the member 12 is free to rotate relatively to the member 14 so that the slot may be caused to face in any direction required by the location of the pipe. After this, friction may be relied on to hold the member 12 at the desired rotative adjustment, or it may be positively secured or locked to the member 14.

I claim:

1. An organ-pipe composed of a plurality of members which are circular in cross section, and one of which is independently r0- tatable, one of said members having a longitudinal opening, while another member has a cam-shaped end overlapping the inner end of the opening, the said cam-shaped end. being adapted to vary the length ol the opening and the el'l'ective length. and pitch of the pipe, as set forth.

2. An organ pipe composed of an outer member having a longitudinal opening, an inner member having a peripheral shoulder below said opening, and a third member formed as a collar supported by and rotatable on said shoulder, said collar having a cam-shaped outer end which overlaps the inner end of the opening.

3. An organ pipe composed of a plurality of members which are circular in cross section, and of tapering form, one of said members having a longitudinal opening, while another member has a cam-shaped end overlapping the inner end ol the opening, one member being rotatable independently to cause the eamshaped end to vary the length of the opening and the eil'ective length and. pitch of the pipe.

4. An organ pipe composed of a tapered outer member having a longitudinal opening, a tapered inner member, the outer end of which receives the inner end of the outer member, and forms a peripheral shoulder surrounding the outer member, and a third. member formed as a tapered. collar supported by and rotatable on said'shoulder, the said collar having a cam-shaped outer end which overlaps the inner end of the opening.

In testimony whereof I have aflixed my signature, in presence of two witnesses.

' FREDERICK I. XVHITE.

Vitnesses C. F. BROWN, E. BATGHELDER. 

